Finding the Fourth Proportional to 9,120.63, 13,706.58 and 5,423.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.63 : 13,706.58 = 5,423.52 : x
2. Step 2: Convert to fraction form
   9,120.63/13,706.58 = 5,423.52/x
3. Step 3: Cross multiply
   9,120.63x = 13,706.58 × 5,423.52
4. Step 4: Simplify right side
   9,120.63x = 74,337,910.76
5. Step 5: Solve for x
   x = 74,337,910.76/9,120.63
6. Step 6: Final answer
   x = 8,150.52